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Full-Text Articles in Biological Psychology

Preweanling Exposure To Selective Catecholamine Transporter Inhibitors Differentially Effects Morphine-Induced Antinociception In Adulthood, Joseph Marco Valentine Jan 2013

Preweanling Exposure To Selective Catecholamine Transporter Inhibitors Differentially Effects Morphine-Induced Antinociception In Adulthood, Joseph Marco Valentine

Theses Digitization Project

The purpose of this project is to determine how early methylphenidate exposure alters opioid receptor functioning in adulthood. To this end, we will administer selective monoamine transporter inhibitors for dopamine and norepinephrine (GBR-12904 and atomoxetine) during preweanling period and assess opioid function in adult rats by testing morphine-induced antinociception using the hot-plate and tail-flick tasks. In order to assess the effects of methylphenidate use on brain functions during development, investigations have been conducted in rats using ages roughly analogous to early and late childhood.


Adolescent And Adult Nicotine Exposure On The Acquisition Of Methamphetamine Self-Administration And The Reinstatement Of Extinguished Methamphetamine-Seeking In Male Rats, Joseph Allan Pipkin Jan 2013

Adolescent And Adult Nicotine Exposure On The Acquisition Of Methamphetamine Self-Administration And The Reinstatement Of Extinguished Methamphetamine-Seeking In Male Rats, Joseph Allan Pipkin

Theses Digitization Project

This study sought to determine the individual and combined contribution of adolescent and adult nicotine exposure on METH self-administration and METH-seeking behavior in male rats. Nicotine is a commonly abused substance among adolescents and is believed to be a "gateway" to other drugs of abuse. In support of the gateway hypothesis, cigarette smoking during adolescence is related to increased methamphetamine (METH) use in adulthood.


The Effect Of Early Psychostimulant Treatment On Abuse Liability And Dopamine Receptors, Steven Wayne Villafranca Jan 2005

The Effect Of Early Psychostimulant Treatment On Abuse Liability And Dopamine Receptors, Steven Wayne Villafranca

Theses Digitization Project

Examines whether the reinforcing properties of drugs of abuse were altered in adulthood by methylphenidate, more commonly known as Ritalin. Subjects were 108 rats of Sprague-Dawley descent (Harlan). Methylphenidate, or saline was administered daily to the subjects from the postnatal period (11-20 days old). The rats preference for morphine during early adulthood was measured using conditioned place preference. The number of dopamine D₂ receptors was measured in each rat and the correlation between receptor number and morphine preference was determined. Results indicate that rats pretreated with methylphenidate showed greater preference for morphine than saline pretreated rats and suggests that exposure …